This library contains a collection of often used converters to write a WPF based application.

The recommended way to use this library is via Nuget.

Currently supported frameworks:

• .NET Framework 3.5 or higher
• .NET Core 3.0 or higher

Import it via:

xmlns:c="clr-namespace:NKristek.Wpf.Converters;assembly=NKristek.Wpf.Converters"

You can use a converter from this library either by using the MarkupExtension*:

<Label Content="{Binding Value}"
       Visibility="{Binding Value, Converter={c:ValueNotNullToVisibilityConverter}}" />

or static instance:

<Label Content="{Binding Value}"
       Visibility="{Binding Value, Converter={x:Static c:ValueNotNullToVisibilityConverter.Instance}}" />

or of course create instances in the views:

<Window.Resources>
    <c:ValueNotNullToVisibilityConverter x:Key="ValueNotNullToVisibilityConverter" />
</Window.Resources>

<Label Content="{Binding Value}"
       Visibility="{Binding Value, Converter={StaticResource ValueNotNullToVisibilityConverter}}" />

You can also use the ValueConverterChain converter*, which executes the given converters in succession. Please note, that the TargetType is only correctly set, when the ValueConversionAttribute is set on the IValueConverter.

<c:ValueConverterChain x:Key="ValueNullToInverseBoolConverter">
    <c:ValueNullToBoolConverter/>
    <c:BoolToInverseBoolConverter/>
</c:ValueConverterChain>

The above use of the ValueConverterChain would be equivalent to the ValueNullToInverseBoolConverter.

*: Only available if target framework is >= .NET 4.0.

Bool:

• BoolToInverseBoolConverter
• ValueNullToBoolConverter
• ValueNullToInverseBoolConverter
• StringNullOrEmptyToBoolConverter
• StringNullOrEmptyToInverseBoolConverter
• ICollectionNullOrEmptyToBoolConverter
• ICollectionNullOrEmptyToInverseBoolConverter
• AllBoolToBoolConverter
• AllBoolToInverseBoolConverter
• AnyBoolToBoolConverter
• AnyBoolToInverseBoolConverter
• ObjectToStringEqualsParameterToBoolConverter
• ObjectToStringEqualsParameterToInverseBoolConverter

Visibility:

• VisibilityToInverseVisibilityConverter
• BoolToVisibilityConverter
• BoolToInverseVisibilityConverter
• ValueNullToVisibilityConverter
• ValueNullToInverseVisibilityConverter
• StringNullOrEmptyToVisibilityConverter
• StringNullOrEmptyToInverseVisibilityConverter
• ICollectionNullOrEmptyToVisibilityConverter
• ICollectionNullOrEmptyToInverseVisibilityConverter
• AllBoolToVisibilityConverter
• AllBoolToInverseVisibilityConverter
• AnyBoolToVisibilityConverter
• AnyBoolToInverseVisibilityConverter
• ObjectToStringEqualsParameterToVisibilityConverter
• ObjectToStringEqualsParameterToInverseVisibilityConverter

Other:

• DateTimeToStringConverter
• ValueConverterChain

If you find a bug feel free to open an issue. Contributions are also appreciated.